搜索结果: 1-15 共查到“braking”相关记录24条 . 查询时间(0.062 秒)
Non-invasive Spoofing Attacks for Anti-lock Braking Systems
Automotive embedded systems Cyber-physical security Non-invasive sensor attacks
2015/12/30
This work exposes a largely unexplored vector of physical-layer attacks
with demonstrated consequences in automobiles. By modifying the physical
environment around analog sensors such as Antilock Br...
Regenerative Braking Strategy for Motor Hoist by Ultracapacitor
ultracapacitor regenerative braking stratege DC/DC converter
2011/8/5
Rising concern in environmental issues on global scale has made energy saving in powered equipment a very important subject. In order to improve the energy efficiency and driving range of a motor hois...
Towards Quark Deconfinement in Neutron Stars via Spindown: Gravitational Waves or Magnetic Braking?
Quark Deconfinement Neutron Stars Gravitational Waves Magnetic Braking
2011/9/28
A phase of interacting quark matter can arise inside the dense core of isolated neutron stars when they have been sufficiently spun down from their initial rapidly rotating configuration. In this work...
Design and Dynamics Analysis of Anti-skid Braking System for Aircraft with Four-wheel Bogie Landing Gears
anti-skid braking system four-wheel bogie landing gear
2011/8/4
In asymmetric conditions, the movement and loads of left/right wheels or front/back wheels of the aircraft with multi-wheel or four-wheel bogie landing gears are inconsistent. There are few open liter...
Development of a Lowcost Hardwareintheloop Simulation System as a Test Bench for Antilocked Braking System
hardwareintheloop simulation(HILS) antilocked braking system(ABS)
2011/8/4
Nowadays validation of antilocked braking system(ABS) systems relies mainly on a large amount of road tests.
Averting the magnetic braking catastrophe on small scales: disk formation due to Ohmic dissipation
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/29
We perform axisymmetric resistive MHD calculations that demonstrate that centrifugal disks can indeed form around Class 0 objects despite magnetic braking. We follow the evolution of a prestellar core...
汽车悬架、转向和制动系统建模与相互影响分析（System Modeling and Interaction Analysis of Vehicle Suspension, Steering and Braking Systems）
车辆集成控制 悬架 转向
2010/1/28
考虑汽车在多种工况下行驶，分别建立了汽车底盘中悬架、转向和制动系统运动的数学模型，分析了3个系统运动之间的相互联系和制约关系。针对多种工况下行驶时各系统之间的相互影响分析，提出了3个系统分别进行设计时应注意的问题和采取的措施。仿真和试验结果表明，3个系统之间的联系紧密，相互制约，表明了所建数学模型的正确性。
引入分层控制概念设计了横摆力矩控制和滑移率控制相结合的车辆稳定性控制系统。建立了侧偏角和横摆角速度具有最佳输出响应的车辆理想模型，采用前馈与反馈控制相结合跟踪理想模型的控制策略，基于最优控制理论设计横摆力矩控制器。通过设计理想滑移率分配模块确定下层滑移率控制器理想值，基于模糊控制理论设计滑移率控制器。在Matlab/Simulink平台上建立8自由度非线性车辆模型，分别在低附着和高附着路面条件下进...
汽车联合制动系统制动力分配系数优化（Optimization of Braking Force Distribution Parameter of United Brake System of Automobile）
汽车 联合制动系统 电涡流缓速器
2009/11/3
由电涡流缓速器和汽车主制动器构成的联合制动系统中，变化的制动力分配系数导致控制单元设计复杂。因此，分析了电涡流缓速器转子盘和制动盘以及制动鼓在不同制动工况下的温度变化过程，建立了联合制动系统制动力分配的优化函数，确定了制动力分配系数的具体数值为0.7。在虚拟多坡度道路上进行了制动过程的模拟计算，结果表明具有优化制动力分配系数的联合制动系统的电涡流缓速器转子盘温度和主制动器的制动盘及制动鼓的温度都处...
永磁式涡流缓速器制动性能影响因素敏感性分析（Sensitivity Analysis on Influence Factors for Braking Performance of Permanent Magnet Type Eddy Current Retarder with Uniform Design）
永磁式涡流缓速器 制动性能 均匀设计
2009/11/3
在分析永磁式涡流缓速器制动力矩与结构参数关系的基础上，将均匀设计和回归分析方法引入到永磁式涡流缓速器制动性能影响因素敏感性分析中。以某型号的永磁式涡流缓速器为例，建立了制动力矩随转子鼓内半径、永磁体周向长度、气隙宽度、转子鼓轴向宽度和永磁体高度5个结构参数变化的回归模型，重点讨论了结构参数间交互作用以及各结构参数对制动力矩的影响程度，基于均匀试验设计和制动性能敏感性分析的结果，采用全排列法对结构参...
在分析风力机制动数学模型的基础上，设计了柔性制动系统，搭建了半物理混合仿真实验台，并在实验台上进行了风力机柔性制动模拟仿真实验。实验结果表明，风力机正常停机时，柔性制动系统通过改变PLC的PWM输出控制高速开关阀通断时间，从而调节制动力，完成柔性制动过程，可以使叶轮转速下降平缓，风力机齿轮箱扭矩波动减小。 A soft braking system was designed based on th...
基于DYC和ABS分层协调控制策略的ESP仿真（Coordinated Control between Direct Yaw Moment Control and Anti-block Braking System Used for ESP）
汽车 直接横摆力矩控制 制动防抱死系统
2009/5/22
提出了一种基于直接横摆力矩控制器(DYC)和制动防抱死系统(ABS)分层协调控制策略的汽车电子稳定程序(ESP)控制方法，以提高ESP的控制效果。在DYC和ABS的基础上设计了一个协调控制器，将控制系统分成上下层。上层协调控制器根据侧偏角的偏差值和车轮的滑移率计算出对下层子系统的调节量，统一协调下层的DYC和ABS工作。仿真结果表明，采用此协调控制策略，可比单独采用DYC更好地维持车辆的方向稳定性...
Evaluation of veracity of car braking parameters used for the analysis of road accidents
analysis of road accidents accuracy of calculations car braking distance errors braking parameters random variables
2010/11/1
During the road accident analysis speed of the examined vehicle often is being established in accordance with the length of the trace remained by the vehicle tires. Usually in such case there are valu...
Automobile braking and traction characteristics on the different road surfaces
automobile braking parameters deceleration coefficient of traction different road surfaces
2010/11/1
The present article depicts the results of the investigation into automobile braking parameters and traction characteristics on the different road surfaces. The results of the investigation into autom...
Electrodynamic braking in high-speed rail transport
voltage contact system current braking force moment inverter power system braking resistors thyristor electrody-namic braking
2010/11/1
The paper considers electrodynamic braking of trains, which is of particular importance for high-speed railway transport from theoretical and technical perspectives. Braking methods used for high-spee...